TB 11-6115-741-24
3.1.2 PMCS's shall be performed IAW the checklist in Appendix E and the applicable TM, except as
noted herein.
3.8 Air Intake and Exhaust.
3.12 Cooling System
3.13 Fuel System. TIER 1
3.14 Lubrication System.
3.3 Main Generator
3.3.1 The AC generator assembly shall be inspected for evidence of sand and dust intrusion. If sand and
dust is found in the AC generator, the AC generator assembly shall be removed from the generator set,
disassembled and cleaned (steam cleaning is the preferred cleaning method) to remove the loose and
caked dust from all the windings. If liquids are used to clean alternator, alternator must be dried in an
oven or via other industrial process to remove all the liquid from the windings prior to reassembly. If
disassembled, rotor bearing (s) and any o-ring shall be replaced. Prior to reassembly, inspect all the
winding, leads, connectors, and housing components for damage, repair as required.
3.3.1.1 On AC generator assemblies that are disassembled, it is recommended that an Insulation
Resistance test in accordance with Mil-Std-202, Method 302, Test Condition B, ≥ 200MΩ be performed
prior to reassembly.
3.3.2 The exterior surface of the AC generator assembly does not require repainting.
3.3.3 On the MEP-531A if disassembled, inspect the brushes, caps, wires, and holders IAW the TM,
replace as required, and polish the slip rings.
3.3.4 On the 15, 30, and 60 KW TQG's if the AC generator assembly is removed from the generator set,
the two generator mounting bolts shall be replaced, NSN 5305-00-724-7265.
3.3.5 On the 5 and 10 KW TQG, inspect the feet on the stator housing for cracks; cracked feet
must be repaired or replaced.
CAUTION:
Extreme care must be taken during the disassembly, handling, transportation,
cleaning, and drying of the individual AC generator components to ensure that the
windings, leads, connectors, and housing are not damaged.
3.4 DC Electrical System. The 12-volt batteries will be inspected for damage, hydrometer tested, filled
with fluid, recharged, and load or conductance tested. Batteries will be replaced if required, or if
adequate testing equipment is not available. Cables, terminal/battery covers, and terminal lugs shall be
replaced on an as required basis. Recondition or replace battery tray and hold down assemblies as
necessary.
3.5 Housing. If disassembled, the housing shall be cleaned, repaired, and repainted as required. Sound
absorbing foam panels shall be replaced as required, generator sets shall not be disassembled just to
replace damaged foam.
